Solar cell module

Abstract

A plurality of solar cells are arranged in a first direction and each provided with first and second electrodes on a one main surface side thereof. A wiring member includes a conductive layer and a resin sheet supporting the conductive layer, the conductive layer electrically connecting the first electrode of one of the solar cells adjacent to each other in the first direction to the second electrode of another one of the solar cells. An adhesive layer bonds the wiring member to each of the solar cells. The wiring member includes a first bonded portion bonded to the one solar cell via the adhesive layer, a second bonded portion bonded to the other solar cell via the adhesive layer, and a connection portion connecting the first bonded portion and the second bonded portion together, and an opening is provided in the conductive layer in the connection portion.

The invention claimed is: 
     
       1. A solar cell module comprising:
 a first protective member including a glass plate or a ceramic plate and arranged at a side of a light receiving surface; 
 a second protective member including a resin sheet and arranged on a side of a back surface; 
 a plurality of solar cells arranged in a first direction between the first protective member and the second protective member and each provided with first and second electrodes on a one main surface side thereof; 
 a bonding layer arranged between the first protective member and the second protective member and sealing the plurality of solar cells; 
 a wiring member including a conductive layer and a resin sheet supporting the conductive layer arranged between the first protective member and the second protective member, the conductive layer electrically connecting the first electrode of one of the solar cells adjacent to each other in the first direction to the second electrode of another one of the solar cells and sandwiched between the resin sheet of the wiring member and the solar cells; and 
 an adhesive layer bonding the wiring member to each of the solar cells, wherein the wiring member includes
 a first bonded portion bonded to the one solar cell via the adhesive layer, 
 a second bonded portion bonded to the other solar cell via the adhesive layer, and 
 a connection portion connecting the first bonded portion and the second bonded portion together, the connection portion being between the first bonded portion and the second bonded portion in the first direction, and wherein 
 
 the conductive layer in the connection portion has a plurality of openings such that the resin sheet covers the plurality of openings, the plurality of openings comprising, 
 a first opening row and a second opening row are immediately adjacent each other in the first direction, each opening row including a plurality of the openings provided in a second direction perpendicular to the first direction, with spaces therebetween, 
 the openings of the first opening row are aligned with corresponding portions in the second opening row in the first direction, the corresponding portions being provided with no opening, and 
 a length of the space in the first opening row in the second direction is same as a length of the space in the second opening row in the second direction. 
 
     
     
       2. The solar cell module according to  claim 1 , wherein
 in the conductive layer, a portion formed by a space between the openings of the first opening row and a space between the openings of the second opening row includes a region where the first and second bonded portions are not connected to each other linearly in the first direction. 
 
     
     
       3. The solar cell module according to  claim 1 , wherein
 between the first bonded portion and the second bonded portion, the conductive layer includes a portion which is linearly continuous in the first direction. 
 
     
     
       4. The solar cell module according to  claim 1 , wherein
 a shape of each of the opening is one of a rectangle with rounded corner portions, a circle, an ellipse, and an oval. 
 
     
     
       5. The solar cell module according to  claim 1 , wherein
 the first direction is parallel to edges of the one of the solar cells adjacent to each other in the first direction and to the another one of the solar cells. 
 
     
     
       6. The solar cell module according to  claim 1 , wherein the openings each have curved corner portions. 
     
     
       7. A solar cell module comprising:
 a first protective member including a glass plate or a ceramic plate and arranged at a side of a light receiving surface; 
 a second protective member including a resin sheet and arranged on a side of a back surface; 
 a plurality of solar cells arranged in a first direction between the first protective member and the second protective member and each provided with first and second electrodes on a one main surface side thereof; 
 a bonding layer arranged between the first protective member and the second protective member and sealing the plurality of solar cells; 
 a wiring member including a conductive layer and a resin sheet supporting the conductive layer arranged between the first protective member and the second protective member, the conductive layer electrically connecting the first electrode of one of the solar cells adjacent to each other in the first direction to the second electrode of another one of the solar cells and sandwiched between the resin sheet of the wiring member and the solar cells; and 
 an adhesive layer bonding the wiring member to each of the solar cells, wherein the wiring member includes
 a first bonded portion bonded to the one solar cell via the adhesive layer, 
 a second bonded portion bonded to the other solar cell via the adhesive layer, and 
 a connection portion connecting the first bonded portion and the second bonded portion together, the connection portion being between the first bonded portion and the second bonded portion in the first direction, and wherein 
 
 the conductive layer in the connection portion has a plurality of openings such that the resin sheet covers the plurality of openings, the plurality of openings comprising, 
 a first opening row and a second opening row immediately adjacent each other in the first direction, each opening row including a plurality of the openings provided in a second direction perpendicular to the first direction, with spaces therebetween, 
 all spaces in the first opening row have a same length in the second direction as each other, and 
 all spaces in the second opening row have a same length in the second direction as each other. 
 
     
     
       8. The solar cell module according to  claim 1 , wherein
 a plane area of the resin sheet is larger than a plane area of the conductive layer. 
 
     
     
       9. A solar cell module comprising:
 a first protective member including a glass plate or a ceramic plate and arranged at a side of a light receiving surface; 
 a second protective member including a resin sheet and arranged on a side of a back surface; 
 a plurality of solar cells arranged in a first direction between the first protective member and the second protective member and each provided with first and second electrodes on a one main surface side thereof; 
 a bonding layer arranged between the first protective member and the second protective member and sealing the plurality of solar cells; 
 a wiring member including a conductive layer and a resin sheet supporting the conductive layer arranged between the first protective member and the second protective member, the conductive layer electrically connecting the first electrode of one of the solar cells adjacent to each other in the first direction to the second electrode of another one of the solar cells and sandwiched between the resin sheet of the wiring member and the solar cells; and 
 an adhesive layer bonding the wiring member to each of the solar cells, wherein the wiring member includes
 a first bonded portion bonded to the one solar cell via the adhesive layer, 
 a second bonded portion bonded to the other solar cell via the adhesive layer, and 
 a connection portion connecting the first bonded portion and the second bonded portion together, the connection portion being between the first bonded portion and the second bonded portion in the first direction, and wherein 
 
 the conductive layer in the connection portion has a plurality of openings such that the resin sheet covers the plurality of openings, and 
 the conductive layer and the resin sheet have a same outline shape as each other in a planar view thereof. 
 
     
     
       10. The solar cell module according to  claim 9 , wherein
 the plurality of openings comprises a plurality of opening rows extending in a second direction intersecting the first direction. 
 
     
     
       11. The solar cell module according to  claim 10 , wherein
 in the conductive layer, a portion formed by a space between the openings of one of the opening rows and a space between the openings of another one of the opening rows includes a region where the first and second bonded portions are not connected to each other linearly in the first direction. 
 
     
     
       12. The solar cell module according to  claim 9 , wherein
 a plurality of opening rows are provided in the first direction, each opening row including a plurality of the openings provided in a second direction perpendicular to the first direction, with spaces there between, and 
 the openings of one of the opening rows adjacent in the first direction are aligned with corresponding portions in another one of the opening rows in the first direction, the corresponding portions being provided with no opening. 
 
     
     
       13. The solar cell module according to  claim 10 , wherein
 between the first bonded portion and the second bonded portion, the conductive layer includes a portion which is linearly continuous in the first direction. 
 
     
     
       14. The solar cell module according to  claim 9 , wherein
 a shape of each of the plurality of openings is one of a rectangle with rounded corner portions, a circle, an ellipse, and an oval. 
 
     
     
       15. The solar cell module according to  claim 12 , wherein
 the first direction is parallel to edges of the one of the solar cells adjacent to each other in the first direction and to the another one of the solar cells. 
 
     
     
       16. The solar cell module according to  claim 9 , wherein
 each of the plurality of openings has curved corner portions. 
 
     
     
       17. The solar cell module according to  claim 9 , wherein
 a plurality of opening rows are provided in the first direction, each opening row including a plurality of the openings provided in a second direction perpendicular to the first direction, with spaces there between, and 
 a length of the space in one of the opening rows in the second direction is a same as a length of the space in another one of the opening rows in the second direction. 
 
     
     
       18. The solar cell module according to  claim 9 , wherein
 a plane area of the resin sheet is larger than a plane area of the conductive layer.